<template>
	<view class="preview" v-if="currentInfo">
		<swiper circular :current="currentIndex" @change="swiperChange">
			<swiper-item v-for="(item, index) in classList" :key="item._id">
				<image v-if="readImgs.includes(index)" @click="maskChange" :src="item.picurl" mode="aspectFill"></image>
			</swiper-item>
		</swiper>

		<view class="mask" v-if="maskState">
			<!-- #ifndef MP-TOUTIAO -->
			<view class="goBack" @click="goBack" :style="{ top: getStatusBarHeight() + 'px' }">
				<uni-icons type="back" color="#fff" size="20"></uni-icons>
			</view>
			<!-- #endif -->

			<view class="count">{{ currentIndex + 1 }} / {{ classList.length }}</view>
			<view class="time">
				<uni-dateformat :date="new Date()" format="hh:mm"></uni-dateformat>
			</view>
			<view class="date">
				<uni-dateformat :date="new Date()" format="MM月dd日"></uni-dateformat>
			</view>
			<view class="footer">
				<view class="box" @click="clickInfo">
					<uni-icons type="info" size="28"></uni-icons>
					<view class="text">信息</view>
				</view>

				<view class="box" @click="clickScore">
					<uni-icons type="star" size="28"></uni-icons>
					<view class="text">{{ currentInfo.score }}分</view>
				</view>

				<view class="box" @click="clickDownload">
					<uni-icons type="download" size="23"></uni-icons>
					<view class="text">下载</view>
				</view>
			</view>
		</view>

		<!-- 信息弹窗 -->
		<uni-popup ref="infoPopup" type="bottom">
			<view class="infoPopup">
				<view class="popHeader">
					<view></view>
					<view class="title">壁纸信息</view>
					<view class="close" @click="clickInfoClose">
						<uni-icons type="closeempty" size="18" color="#999"></uni-icons>
					</view>
				</view>
				<scroll-view scroll-y>
					<view class="content">
						<view class="row">
							<view class="label">壁纸ID：</view>
							<text selectable class="value">{{ currentInfo._id }}</text>
						</view>

						<navigator :url="'/pages/classlist/classlist?id=' + currentInfo.classId + '&name=' + currentInfo.classname" class="row">
							<view class="label">分类：</view>
							<text class="value class">{{ currentInfo.classname }}</text>
						</navigator>

						<view class="row">
							<view class="label">发布者：</view>
							<text class="value">{{ currentInfo.nickname || currentInfo.username }}</text>
						</view>

						<view class="row">
							<text class="label">评分：</text>
							<view class="value roteBox">
								<uni-rate readonly touchable :value="currentInfo.score" size="16" />
								<text class="score">{{ currentInfo.score }}分</text>
							</view>
						</view>

						<view class="row">
							<text class="label">摘要：</text>
							<view class="value">
								{{ currentInfo.description }}
							</view>
						</view>

						<view class="row">
							<text class="label">标签：</text>
							<view class="value tabs">
								<navigator :url="'/pages/search/search?keyword=' + tab" class="tab" v-for="tab in currentInfo.tabs?.split(',')" :key="tab">
									{{ tab }}
								</navigator>
							</view>
						</view>

						<view class="copyright">
							声明：本图片来用户投稿，非商业使用，用于免费学习交流，如侵犯了您的权益，您可以拷贝壁纸ID举报至平台，邮箱1490814083@qq.com，管理将删除侵权壁纸，维护您的权益。
						</view>

						<view class="safe-area-inset-bottom"></view>
					</view>
				</scroll-view>
			</view>
		</uni-popup>

		<!-- 弹窗 -->
		<uni-popup ref="scorePopup" :is-mask-click="false">
			<view class="scorePopup">
				<view class="popHeader">
					<view></view>
					<view class="title">{{ isScore ? '评分过了~' : '壁纸评分' }}</view>
					<view class="close" @click="clickScoreClose">
						<uni-icons type="closeempty" size="18" color="#999"></uni-icons>
					</view>
				</view>

				<view class="content">
					<uni-rate v-model="userScore" allowHalf :disabled="isScore" disabled-color="#FFCA3E" />
					<text class="text">{{ userScore }}分</text>
				</view>

				<view class="footer">
					<button @click="submitScore" :disabled="!userScore || isScore" type="default" size="mini" plain>确认评分</button>
				</view>
			</view>
		</uni-popup>
	</view>
</template>

<script setup>
import { ref } from 'vue';
import { onLoad, onShareAppMessage, onShareTimeline } from '@dcloudio/uni-app';
import { getStatusBarHeight } from '@/utils/system.js';
import { setWallScore, downloadWall, detailWall } from '@/api/index.js';
import TokenManager from '@/utils/tokenManager.js';

const maskState = ref(true);
const infoPopup = ref(null);
const scorePopup = ref(null);
const userScore = ref(0);
const classList = ref([]);
const currentId = ref(null);
const currentIndex = ref(0);
const currentInfo = ref(null);
const isScore = ref(false);
const readImgs = ref([]);
const token = ref();

const storgClassList = uni.getStorageSync('storgClassList') ?? [];
// 从缓存中获取用户id
const userId = uni.getStorageSync('userInfo')?.uid;
classList.value = storgClassList.map((item) => {
	return {
		...item,
		picurl: item.url
	};
});

onLoad(async (e) => {
	currentId.value = e.id;
	// 如果是分享进入，则查询接口数据，否则直接用缓存中的数据
	if (e.type === 'share') {
		let res = await detailWall({ id: currentId.value });
		classList.value = res.data.map((item) => {
			return {
				...item,
				picurl: item.url
			};
		});
	}
	currentIndex.value = classList.value.findIndex((item) => item._id == currentId.value);
	currentInfo.value = classList.value[currentIndex.value];
	readImgsFun();
	token.value = TokenManager.getToken();
});

const swiperChange = (e) => {
	currentIndex.value = e.detail.current;
	currentInfo.value = classList.value[currentIndex.value];
	readImgsFun();
};

//点击info弹窗
const clickInfo = () => {
	infoPopup.value.open();
};

//点击关闭信息弹窗
const clickInfoClose = () => {
	infoPopup.value.close();
};

//评分弹窗
const clickScore = () => {
	if (!token.value || !userId) {
		return uni.navigateTo({
			url: '/pages/user/login'
		});
	}
	if (currentInfo.value.userScore) {
		isScore.value = true;
		userScore.value = currentInfo.value.userScore;
	}
	scorePopup.value.open();
};

//关闭评分框
const clickScoreClose = () => {
	scorePopup.value.close();
	userScore.value = 0;
	isScore.value = false;
};

//确认评分
const submitScore = async () => {
	uni.showLoading({
		title: '加载中...'
	});
	let res = await setWallScore({
		id: currentInfo.value._id,
		score: userScore.value,
		userId
	});
	uni.hideLoading();
	if (res.errCode === 0) {
		uni.showToast({
			title: '评分成功',
			icon: 'none'
		});
		classList.value[currentIndex.value].userScore = userScore.value;
		uni.setStorageSync('storgClassList', classList.value);
		clickScoreClose();
	}
};

//遮罩层状态
const maskChange = () => {
	maskState.value = !maskState.value;
};

//返回上一页
const goBack = () => {
	uni.navigateBack({
		success: () => {},
		fail: (err) => {
			uni.reLaunch({
				url: '/pages/index/index'
			});
		}
	});
};

//点击下载
const clickDownload = async () => {
	// #ifdef H5
	uni.showModal({
		content: '请长按保存壁纸',
		showCancel: false
	});
	// #endif

	// #ifndef H5
	try {
		if (!token.value || !userId) {
			return uni.navigateTo({
				url: '/pages/user/login'
			});
		}
		uni.showLoading({
			title: '下载中...',
			mask: true
		});
		// 记录下载信息
		let res = await downloadWall({
			id: currentInfo.value._id,
			userId
		});
		if (res.errCode !== 0) throw res;
		// 根据网络地址获取壁纸的临时路径
		uni.getImageInfo({
			src: currentInfo.value.picurl,
			success: (res) => {
				uni.saveImageToPhotosAlbum({
					filePath: res.path, // filePath必须是临时路径或文件路径，不支持网络路径
					success: (res) => {
						uni.showToast({
							title: '保存成功，请到相册查看',
							icon: 'none'
						});
					},
					fail: (err) => {
						if (err.errMsg === 'saveImageToPhotosAlbum:fail cancel') {
							uni.showToast({
								title: '保存失败，请重新点击下载',
								icon: 'none'
							});
							return;
						}
						uni.showModal({
							title: '授权提示',
							content: '需要授权保存相册',
							success: (res) => {
								if (res.confirm) {
									uni.openSetting({
										success: (setting) => {
											if (setting.authSetting['scope.writePhotosAlbum']) {
												uni.showToast({
													title: '获取授权成功',
													icon: 'none'
												});
											} else {
												uni.showToast({
													title: '获取权限失败',
													icon: 'none'
												});
											}
										}
									});
								}
							}
						});
					},
					complete: () => {
						uni.hideLoading();
					}
				});
			}
		});
	} catch (err) {
		console.log(err);
		uni.hideLoading();
	}
	// #endif
};

//分享给好友
onShareAppMessage((e) => {
	return {
		title: '致成相册',
		path: '/pages/preview/preview?id=' + currentId.value + '&type=share'
	};
});

//分享朋友圈
onShareTimeline(() => {
	return {
		title: '致成相册',
		query: 'id=' + currentId.value + '&type=share'
	};
});

// 提前缓存上一张和下一张
function readImgsFun() {
	readImgs.value.push(
		currentIndex.value <= 0 ? classList.value.length - 1 : currentIndex.value - 1,
		currentIndex.value,
		currentIndex.value >= classList.value.length - 1 ? 0 : currentIndex.value + 1
	);
	readImgs.value = [...new Set(readImgs.value)];
}
</script>

<style lang="scss" scoped>
.preview {
	width: 100%;
	height: 100vh;
	position: relative;

	swiper {
		width: 100%;
		height: 100%;

		image {
			width: 100%;
			height: 100%;
		}
	}

	.mask {
		& > view {
			position: absolute;
			left: 0;
			margin: auto;
			color: #fff;
			right: 0;
			width: fit-content;
		}

		.goBack {
			width: 38px;
			height: 38px;
			background: rgba(0, 0, 0, 0.5);
			left: 30rpx;
			margin-left: 0;
			border-radius: 100px;
			top: 0;
			backdrop-filter: blur(10rpx);
			border: 1rpx solid rgba(255, 255, 255, 0.3);
			display: flex;
			align-items: center;
			justify-content: center;
		}

		.count {
			top: 10vh;
			background: rgba(0, 0, 0, 0.3);
			font-size: 28rpx;
			border-radius: 40rpx;
			padding: 8rpx 28rpx;
			backdrop-filter: blur(10rpx);
		}

		.time {
			font-size: 140rpx;
			top: calc(10vh + 80rpx);
			font-weight: 100;
			line-height: 1em;
			text-shadow: 0 4rpx rgba(0, 0, 0, 0.3);
		}

		.date {
			font-size: 34rpx;
			top: calc(10vh + 230rpx);
			text-shadow: 0 2rpx rgba(0, 0, 0, 0.3);
		}

		.footer {
			background: rgba(255, 255, 255, 0.8);
			bottom: 10vh;
			width: 65vw;
			height: 120rpx;
			border-radius: 120rpx;
			color: #000;
			display: flex;
			justify-content: space-around;
			align-items: center;
			box-shadow: 0 2rpx 0 rgba(0, 0, 0, 0.1);
			backdrop-filter: blur(20rpx);

			.box {
				display: flex;
				flex-direction: column;
				align-items: center;
				justify-content: center;
				padding: 2rpx 12rpx;

				.text {
					font-size: 26rpx;
					color: $text-font-color-2;
				}
			}
		}
	}

	.popHeader {
		display: flex;
		justify-content: space-between;
		align-items: center;

		.title {
			color: $text-font-color-2;
			font-size: 26rpx;
		}

		.close {
			padding: 6rpx;
		}
	}

	.infoPopup {
		background: #fff;
		padding: 30rpx;
		border-radius: 30rpx 30rpx 0 0;
		overflow: hidden;

		scroll-view {
			max-height: 60vh;

			.content {
				.row {
					display: flex;
					padding: 16rpx 0;
					font-size: 32rpx;
					line-height: 1.7em;

					.label {
						color: $text-font-color-3;
						width: 140rpx;
						text-align: right;
						font-size: 30rpx;
					}

					.value {
						flex: 1;
						width: 0;
					}

					.roteBox {
						display: flex;
						align-items: center;

						.score {
							font-size: 26rpx;
							color: $text-font-color-2;
							padding-left: 10rpx;
						}
					}

					.tabs {
						display: flex;
						flex-wrap: wrap;

						.tab {
							border: 1px solid $brand-theme-color;
							color: $brand-theme-color;
							font-size: 22rpx;
							padding: 10rpx 30rpx;
							border-radius: 40rpx;
							line-height: 1em;
							margin: 0 10rpx 10rpx 0;
						}
					}

					.class {
						color: $brand-theme-color;
						text-decoration: underline;
					}
				}

				.copyright {
					font-size: 28rpx;
					padding: 20rpx;
					background: #f6f6f6;
					color: #666;
					border-radius: 10rpx;
					margin: 20rpx 0;
					line-height: 1.6em;
				}
			}
		}
	}

	.scorePopup {
		background: #fff;
		padding: 30rpx;
		width: 70vw;
		border-radius: 30rpx;

		.content {
			padding: 30rpx 0;
			display: flex;
			justify-content: center;
			align-items: center;

			.text {
				color: #ffca3e;
				padding-left: 10rpx;
				width: 80rpx;
				line-height: 1em;
				text-align: right;
				font-size: 28rpx;
			}
		}

		.footer {
			padding: 10rpx 0;
			display: flex;
			align-items: center;
			justify-content: center;
		}
	}
}
</style>
